al_triangulate_polygon - Online Linux Manual PageSection : 3
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Source : Allegro reference manual
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NAMEal_triangulate_polygon − Allegro 5 API

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SYNOPSIS #include <allegro5/allegro_primitives.h> bool al_triangulate_polygon(    const float* vertices, size_t vertex_stride, const int* vertex_counts,    void (*emit_triangle)(int, int, int, void*), void* userdata)

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DESCRIPTIONDivides a simple polygon into triangles, with zero or more other simple polygons subtracted from it − the holes. The holes cannot touch or intersect with the outline of the main polygon. Simple means the polygon does not have to be convex but must not be self−overlapping. Parameters: • vertices − Interleaved array of (x, y) vertex coordinates for each of the polygons, including holes. • vertex_stride − distance (in bytes) between successive pairs of vertices in the array. • vertex_counts − Number of vertices for each polygon. The number of vertices in the main polygon is given by vertex_counts[0] and must be at least three. Subsequent elements indicate the number of vertices in each hole. The array must be terminated with an element with value zero. • emit_triangle − a function to be called for every set of three points that form a triangle. The function is passed the indices of the points in vertices and userdata. • userdata − arbitrary data to be passed to emit_triangle.

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SINCE5.1.0

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SEE ALSOal_draw_filled_polygon_with_holes(3) 0

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